Set Screws Knurled Cup Point

What are Set Screws Knurled Cup Point?

Knurled cup point set screws are headless fasteners with a cup-shaped tip that has serrated ridges. The knurling increases bite on the mating surface to resist loosening in vibration-prone applications while keeping a low, flush profile.

Why choose Set Screws Knurled Cup Point

• Enhanced vibration resistance — serrated cup edges grip the surface and reduce back-out.
• Strong holding power — frictional bite resists rotation and axial slip on round shafts.
• Headless, low-profile design — sits flush or below the surface for tight clearances.
• Serviceable — common hex-socket drives allow precise torque in confined spaces.

Common applications for Set Screws Knurled Cup Point

• Securing collars, gears, sprockets, and pulleys subjected to vibration
• Automotive, motorcycle, and equipment assemblies
• Industrial machinery, jigs, fixtures, and instruments
• Semi-permanent installations requiring strong grip

Materials and finishes for Set Screws Knurled Cup Point

• Alloy steel black oxide for high strength in dry interior environments.
• 18-8 / 304 stainless steel for broad corrosion resistance.
• 316 stainless steel for marine/coastal or chloride exposure.

How to size and specify Set Screws Knurled Cup Point

Order by diameter × thread × overall length (e.g., 10-32 × 3/16″, 1/4″-20 × 3/8″, M6-1.0 × 8 mm). Choose UNC/UNF or metric ISO to match the tapped hole, and select the drive style (typically hex-socket) to suit your tools.

How Knurled Cup Point Set Screws compare to other point styles

• Knurled cup vs cup — knurled adds serrations for extra bite under vibration; standard cup marks less.
• Knurled cup vs flat — flat bears on a machined flat for minimal marring and frequent repositioning.
• Knurled cup vs cone — cone penetrates deepest for maximum location; may mark the shaft more.
• Knurled cup vs dog/half-dog — dog points index into a hole/slot for positive positioning rather than frictional grip.

Installation tips for Set Screws Knurled Cup Point

• Seat the hex key fully and tighten to the recommended torque for the size/material.
• Where possible, add a small flat on the shaft to improve anti-slip resistance.
• Use a suitable threadlocker or a jam set screw in high-vibration service.
• Avoid over-torque that can deform threads or excessively mark the mating surface.